The talk around is always about the legacy Pentax glass made for 35mm film cameras.

However, for a decade already, DA glass has created its own legacy. If, say, Pentax comes out with a 36MP FF camera that supports crop lenses, that FF camera also becomes a 16MP APS-C camera if DA glass is used.

Instead of buying all new glass assortments for an FF, users can decide what to keep of their DA glass that will continue to work same as on theirs K-5s.

An FF camera adds a few more interesting options: it's already a K-5, and more (if they keep the size of it small enough, of course).

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Zvonimir Tosic“A portrait is not made in the camera, but on either side of it.”— Edward Steichen

I'm sure I am far from alone in having a substantial inventory of FF only glass .

Most of my lenses are SMC-M from the film era , and the handful of AF lenses I have bought since are also FF , since I wanted them still to work with my film bodies .